Question Discussion & Solution

Concept:

• People eat different types of fruits and vegetables.
• Different parts or all parts of various plants can be eaten as food.
• In different places, different parts of a plant are eaten.
• Flowers can be used in different ways.
• Flowers can be eaten as well.
• Many flowers are cooked as vegetables.

Explanation:

T hus, the correct match is Flower: Drumsticks.

Additional Information

• In Uttar Pradesh, people enjoy eating a vegetable made of kachnar flowers.
• In Kerala and West Bengal, people cook a vegetable made of banana flowers.
• People who are from Maharashtra love pakoras made of drumsticks (sahjan) flowers.

The correct answer is Calcium Carbonate.

Key Points

• The chief component of the nacre that constitutes the pearl is aragonite (CaCO₃).
• Nacre also contains a small amount of conchiolin, a hornlike organic substance (albuminoid) that is the main constituent of the mollusc's outer shell.
• Pearl also contains Magnesium Carbonate(MgCO₃) along with Calcium Carbonate.

Additional Information

• Calcium carbonate is a common substance found in rocks as the minerals calcite and aragonite and is the main component of eggshells, snail shells, seashells, and pearls. 
• The Molar Mass of Calcium Carbonate is 100.0869 g/mol.
• Melting point: 825 °C.

The correct answer is Tartaric acid.

• Tartaric acid is an organic acid that is white and crystalline.

Key Points

• It is found naturally in many fruits like grapes, bananas, tamarind, etc.
• This acid is added to foods as an antioxidant and to give its distinctive sour taste.
• Crystals and powders are prepared by a chemical process.
• It is also added to food for preservation.
• It is also a good antioxidant and is beneficial for kidneys.
• It helps to absorb minerals in the body.
• It is also helpful in controlling problems related to gases in the body.

The correct answer is ALU.

• The part of the CPU that performs logical operations is called ALU.

​Important Points

• There are 2 parts of the CPU:
  • Arithmetic and logic unit (ALU)
  • Control Unit

Key Points

• The arithmetic and logic unit (ALU)
  • The arithmetic and logic unit (ALU) is where the CPU performs the arithmetic and logic operations.
  • Examples of arithmetic operations are addition, subtraction, multiplication, and division.
  • Examples of logic operations are comparisons of values such as NOT, AND, and OR.
  • The Control Unit carries out instructions.

Additional Information

• The central processing unit (CPU)
  • The computer's central processing unit (CPU) is the device of a computer that retrieves and executes instructions. 
  • The major types of CPU are classified such as:
    • Single-core processor
    • Dual-core processor
    • Quad-core processor
    • Hexa core processor

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